The AD7834/AD7835 are quad 14-bit DACs from Analog Devices with a power-on reset function. The maximum output voltage range is ±8.192 V and the maximum output voltage span is 14 V.
The AD7834 and AD7835 contain four 14‑bit DACs in a single monolithic chip. The AD7834 uses a serial input interface, while the AD7835 supports parallel 8‑bit/14‑bit loading. Both devices provide voltage outputs with a maximum span of 14 V and are suited for process control, automatic test equipment, and general‑purpose instrumentation.
The datasheet details functional block diagrams, timing specifications, absolute maximum ratings, thermal resistance, and pin configurations. It also lists the available surface‑mount packages (28‑lead SOIC, 28‑lead PDIP for AD7834; 44‑lead MQFP, 44‑lead PLCC for AD7835) and provides ordering information.
| Resolution | 14 bits |
|---|---|
| Relative Accuracy | +2 LSB (AD7834), +1 LSB (AD7835) |
| Differential Nonlinearity | +0.9 LSB max |
| Full‑Scale Output Range | ±8.192 V (span 14 V) |
| Power Supply (Vee) | 5.0 V ±5% |
The devices provide a maximum/minimum output voltage range of +8.192 V with a total span of 14 V.
Each device contains four 14‑bit DAC channels in one package.
The AD7834 is offered in a 28‑lead SOIC package and a 28‑lead PDIP package.